/Engine/Plugins/Runtime/GeometryCache/Source/GeometryCacheEd/Classes/GeometryCacheThumbnailScene.h
FThumbnailPreviewSceneimplementation.
virtual void GetViewMatrixParameters ( const float InFOVDegrees, FVector & OutOrigin, float & OutOrbitPitch, float & OutOrbitYaw, float & OutOrbitZoom ) const